White Reference/Exposure Lamp Illumination Error - Lexmark X940e Service Manual

Step
3
Check the exposure lamp PS card assembly.
Is the above card properly connected to the scanner
controller card assembly?
4
Check the scanner PS card assembly for connection.
Is the above card connected properly?
5
Perform a POR.
Does the error remain when the power is turned off/on?

844.01 White reference/exposure lamp illumination error

Step
1 Check the large platen glass.
Is the large platen glass installed properly?
2
Remove the large platen glass. Go to
removal" on page
Check the bottom of the large platen glass in the vicinity the
white reference strip for contamination.
Is the vicinity of white reference strip contaminated?
3
Perform a POR.
Does the error remain?
Check
Check
"Large platen glass
4-117.
Yes
Replace the Replace the
exposure lamp connection.
PS card
assembly.
"Exposure lamp
PS card
assembly
removal" on
page 4-122.
Replace the Replace the
scanner PS card connection.
assembly.
"Scanner
Go to
PS card
assembly
removal" on
page 4-126.
Replace the Problem solved.
scanner
controller card
assembly.
Go to "Scanner
controller card
assembly
removal" on
page 4-123.
Yes
Go to step 2. Remove and
clean the large
platen glass.
Go to "Large
platen glass
removal" on
page 4-117.
Reinstall the
large platen glass
properly.
Go to step 3.
Clean the bottom Go to step 4.
of the large
platen glass in
the vicinity of the
white reference
strip.
Reinstall the
large platen
glass properly.
Go to step 3.
Go to step 4. Problem solved.
Diagnostic information
7510
No
No
2-123